643
FZUS51 KBOX 172304
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
704 PM EDT SAT OCT 17 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-181200-
704 PM EDT SAT OCT 17 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRES BUILDS OVER THE WATERS TONIGHT AND SUN. A LOW PRES OFF THE
MID ATLC COAST SHOULD LINGER THERE THROUGH THU. THE WORST IMPACTS
FROM THIS STORM MAY REMAIN S OF OUR WATERS, BUT GUSTY NE WINDS AND
ROUGH SEAS ARE STILL EXPECTED, ESPECIALLY ACROSS THE SRN WATERS.
ANZ250-181200-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
704 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
TONIGHT
N WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 4 TO 6 FT. WAVE DETAIL: N 4 FT
AT 6 SECONDS AND SE 2 FT AT 8 SECONDS.
SUN
N WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, DIMINISHING TO
AROUND 5 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS.
SUN NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 4 SECONDS AND E 2 FT AT 8 SECONDS.
MON
E WINDS 5 TO 10 KT. SEAS 2 TO 4 FT, BUILDING TO 4 TO 6 FT
IN THE AFTERNOON. WAVE DETAIL: E 3 FT AT 10 SECONDS AND E 2 FT AT
6 SECONDS, BECOMING E 5 FT AT 10 SECONDS AND E 2 FT AT 7 SECONDS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP
TO 30 KT. SEAS 6 TO 9 FT. WAVE DETAIL: E 9 FT AT 11 SECONDS AND
NE 8 FT AT 6 SECONDS.
WED THROUGH THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO
30 KT. SEAS 6 TO 9 FT. WAVE DETAIL: NE 9 FT AT 8 SECONDS AND NW
2 FT AT 5 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-181200-
MASSACHUSETTS BAY AND IPSWICH BAY-
704 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT,
DIMINISHING TO 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND E 1 FOOT AT
9 SECONDS.
SUN
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND E 1 FOOT AT
9 SECONDS.
SUN NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NW 1 FOOT AT 2 SECONDS AND NE 1 FOOT AT 5 SECONDS.
MON
E WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT
11 SECONDS AND E 2 FT AT 7 SECONDS.
MON NIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 4 TO 6 FT. WAVE DETAIL:
NE 6 FT AT 7 SECONDS AND E 6 FT AT 10 SECONDS.
TUE AND TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 5 TO 7 FT. WAVE DETAIL: N 7 FT AT 5 SECONDS AND E 7 FT AT
10 SECONDS.
WED THROUGH THU
NE WINDS 25 TO 30 KT. SEAS 5 TO 7 FT.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-181200-
CAPE COD BAY-
704 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. WAVE DETAIL: N 4 FT AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
SUN
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT
AT 5 SECONDS AND NE 1 FOOT AT 9 SECONDS.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: E 3 FT AT 10 SECONDS AND SE 3 FT AT
11 SECONDS.
MON NIGHT AND TUE
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS AND E 5 FT AT
11 SECONDS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
4 TO 6 FT. WAVE DETAIL: N 6 FT AT 5 SECONDS AND E 6 FT AT
9 SECONDS.
WED AND WED NIGHT
NE WINDS 25 TO 30 KT, DIMINISHING TO 20 TO
25 KT. SEAS 4 TO 6 FT.
THU
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-181200-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
704 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
...GALE WATCH IN EFFECT FROM MONDAY EVENING THROUGH WEDNESDAY
MORNING...
TONIGHT
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 5 TO 7 FT. WAVE DETAIL: N 6 FT
AT 7 SECONDS AND S 2 FT AT 7 SECONDS.
SUN
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: N 5 FT
AT 7 SECONDS AND NE 3 FT AT 12 SECONDS.
SUN NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: E 4 FT AT 8 SECONDS AND E 3 FT AT
11 SECONDS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND E 4 FT AT 6 SECONDS.
MON NIGHT AND TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 7 TO 10 FT. WAVE DETAIL: E 10 FT AT 11 SECONDS AND N 7 FT AT
5 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
7 TO 10 FT. WAVE DETAIL: NE 10 FT AT 10 SECONDS AND N 7 FT AT
7 SECONDS.
WED
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 8 TO
11 FT.
WED NIGHT AND THU
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 9 TO 12 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
7 TO 10 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-181200-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
704 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
...GALE WATCH IN EFFECT FROM MONDAY EVENING THROUGH WEDNESDAY
MORNING...
TONIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS AND NE 3 FT AT 8 SECONDS.
SUN
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: N 4 FT AT 5 SECONDS AND NE 4 FT AT 10 SECONDS.
SUN NIGHT
NE WINDS 10 TO 15 KT, BECOMING E 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT
AT 9 SECONDS AND E 4 FT AT 6 SECONDS.
MON
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT, BUILDING TO 5 TO 8 FT IN THE AFTERNOON. WAVE DETAIL: E 6 FT
AT 9 SECONDS AND E 5 FT AT 9 SECONDS, BECOMING E 8 FT AT
10 SECONDS AND N 4 FT AT 5 SECONDS. A CHANCE OF SHOWERS IN THE
AFTERNOON.
MON NIGHT AND TUE
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 7 TO 10 FT. WAVE DETAIL: E 10 FT AT 12 SECONDS AND N 8 FT AT
6 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS
7 TO 10 FT. WAVE DETAIL: E 10 FT AT 10 SECONDS AND N 8 FT AT
6 SECONDS.
WED
NE WINDS 30 TO 40 KT. SEAS 8 TO 11 FT.
WED NIGHT AND THU
NE WINDS 30 TO 35 KT, BECOMING 25 TO 35 KT.
SEAS 8 TO 11 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS
6 TO 9 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-181200-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
704 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
...GALE WATCH IN EFFECT FROM MONDAY EVENING THROUGH WEDNESDAY
MORNING...
TONIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS AND S 2 FT AT 8 SECONDS.
SUN
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT
AT 5 SECONDS AND NE 2 FT AT 10 SECONDS.
SUN NIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL:
NE 3 FT AT 5 SECONDS AND E 3 FT AT 11 SECONDS.
MON
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT, BUILDING TO 6 TO 9 FT IN THE AFTERNOON. WAVE DETAIL: NE
5 FT AT 5 SECONDS AND SE 5 FT AT 11 SECONDS, BECOMING E 8 FT AT
10 SECONDS AND E 6 FT AT 7 SECONDS.
MON NIGHT AND TUE
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 7 TO 10 FT. WAVE DETAIL: E 10 FT AT 13 SECONDS AND N 7 FT AT
6 SECONDS.
TUE NIGHT
NE WINDS 25 TO 30 KT, INCREASING TO 30 TO 35 KT
AFTER MIDNIGHT. SEAS 8 TO 11 FT. WAVE DETAIL: E 10 FT AT
10 SECONDS AND N 7 FT AT 6 SECONDS.
WED
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS 9 TO
12 FT.
WED NIGHT AND THU
NE WINDS AROUND 30 KT, BECOMING 25 TO 35 KT.
SEAS 9 TO 12 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
6 TO 9 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-181200-
NANTUCKET SOUND-
704 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
TONIGHT
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 3 TO 4 FT. WAVE DETAIL: N 3 FT
AT 4 SECONDS AND S 1 FOOT AT 7 SECONDS.
SUN
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT
AT 5 SECONDS AND NE 2 FT AT 11 SECONDS.
SUN NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 5 SECONDS AND N 2 FT AT
6 SECONDS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: E 4 FT AT 11 SECONDS AND NE 3 FT AT 5 SECONDS.
MON NIGHT
NE WINDS 20 TO 25 KT, INCREASING TO 25 TO 30 KT
AFTER MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS
AND E 4 FT AT 11 SECONDS. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
NE WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: N 6 FT AT 5 SECONDS AND E 4 FT AT
11 SECONDS.
WED
NE WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS 5 TO
7 FT.
WED NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS
5 TO 7 FT. A CHANCE OF SHOWERS.
THU AND THU NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-181200-
VINEYARD SOUND-
704 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
AROUND 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SW 1 FOOT AT
7 SECONDS.
SUN
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING NE
AROUND 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N
2 FT AT 4 SECONDS AND S 1 FOOT AT 8 SECONDS.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 12 SECONDS AND NE 1 FOOT AT 4 SECONDS.
MON
NE WINDS 15 TO 20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE 2 FT
AT 4 SECONDS AND SE 2 FT AT 15 SECONDS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP
TO 35 KT. SEAS 3 TO 5 FT. WAVE DETAIL: NE 5 FT AT 5 SECONDS AND
SE 3 FT AT 12 SECONDS.
WED
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 4 TO
6 FT. WAVE DETAIL: NE 5 FT AT 5 SECONDS AND SE 1 FOOT AT
10 SECONDS.
WED NIGHT THROUGH THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP
TO 35 KT. SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-181200-
BUZZARDS BAY-
704 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
3 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND S 1 FOOT AT 7 SECONDS.
SUN
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT
AT 4 SECONDS AND S 1 FOOT AT 7 SECONDS.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND
2 FT AFTER MIDNIGHT. WAVE DETAIL: NE 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 9 SECONDS, BECOMING NE 1 FOOT AT 3 SECONDS AND E 1 FOOT
AT 10 SECONDS.
MON
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND
SE 2 FT AT 8 SECONDS.
MON NIGHT
NE WINDS 15 TO 20 KT, BECOMING N 20 TO 25 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND E
2 FT AT 9 SECONDS.
TUE AND TUE NIGHT
NE WINDS 25 TO 30 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: N 5 FT AT 5 SECONDS AND E 2 FT AT 12 SECONDS.
WED
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 4 TO
6 FT.
WED NIGHT THROUGH THU NIGHT
N WINDS 25 TO 30 KT. SEAS 3 TO
5 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-181200-
RHODE ISLAND SOUND-
704 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S 2 FT AT 7 SECONDS.
SUN
N WINDS 15 TO 20 KT, BECOMING NE AROUND 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S
1 FOOT AT 8 SECONDS.
SUN NIGHT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND
E 1 FOOT AT 9 SECONDS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: NE 4 FT AT 5 SECONDS AND SE 4 FT AT
12 SECONDS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP
TO 35 KT. SEAS 5 TO 7 FT. WAVE DETAIL: SE 7 FT AT 13 SECONDS AND
N 6 FT AT 5 SECONDS.
WED
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 5 TO
7 FT. WAVE DETAIL: N 6 FT AT 5 SECONDS AND E 6 FT AT 10 SECONDS.
WED NIGHT AND THU
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 5 TO 7 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-181200-
BLOCK ISLAND SOUND-
704 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S 2 FT AT 7 SECONDS.
SUN
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N
2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
SUN NIGHT
E WINDS 5 TO 10 KT, BECOMING NE 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 2 FT AT 4 SECONDS AND SE 1 FOOT AT 11 SECONDS.
MON
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT, BUILDING TO 4 TO
6 FT IN THE AFTERNOON. WAVE DETAIL: E 3 FT AT 5 SECONDS AND SE
1 FOOT AT 8 SECONDS, BECOMING E 4 FT AT 7 SECONDS AND SE 4 FT AT
12 SECONDS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP
TO 35 KT. SEAS 5 TO 8 FT. WAVE DETAIL: E 8 FT AT 13 SECONDS AND N
5 FT AT 6 SECONDS.
WED THROUGH THU
N WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT.
SEAS 5 TO 8 FT. WAVE DETAIL: NE 8 FT AT 6 SECONDS AND E 8 FT AT
10 SECONDS.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-181200-
BOSTON HARBOR-
704 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 30 KT, DECREASING TO
20 KT AFTER MIDNIGHT. WAVES AROUND 2 FT.
SUN
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
SUN NIGHT
S WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP
TO 30 KT. WAVES 2 TO 3 FT.
WED THROUGH THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO
30 KT. WAVES 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-181200-
NARRAGANSETT BAY-
704 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 30 KT. WAVES 2 TO
3 FT.
SUN
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. WAVES 2 TO 3 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
MON
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 2 TO 3 FT.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP
TO 30 KT. WAVES 2 TO 3 FT.
WED THROUGH THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO
30 KT. WAVES 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-181200-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
704 PM EDT SAT OCT 17 2026
TONIGHT
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 5 TO 7 FT. WAVE DETAIL: N 6 FT
AT 7 SECONDS AND S 2 FT AT 8 SECONDS.
SUN
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING TO
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT, SUBSIDING TO 2 TO
3 FT IN THE AFTERNOON. WAVE DETAIL: N 3 FT AT 6 SECONDS AND E
2 FT AT 9 SECONDS, BECOMING N 2 FT AT 5 SECONDS AND SE 1 FOOT AT
8 SECONDS.
SUN NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 5 SECONDS AND NW 1 FOOT AT 3 SECONDS.
MON
E WINDS 5 TO 10 KT. SEAS 3 TO 5 FT, BUILDING TO 5 TO 7 FT
IN THE AFTERNOON. WAVE DETAIL: E 4 FT AT 10 SECONDS AND E 3 FT AT
6 SECONDS, BECOMING SE 6 FT AT 11 SECONDS AND E 2 FT AT
3 SECONDS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP
TO 30 KT. SEAS 7 TO 10 FT. WAVE DETAIL: E 10 FT AT 10 SECONDS AND
NE 7 FT AT 7 SECONDS.
WED AND WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 8 TO 10 FT. WAVE DETAIL: NE 10 FT AT 9 SECONDS AND SE 3 FT
AT 9 SECONDS.
THU
NE WINDS 20 TO 25 KT. SEAS 7 TO 10 FT. A CHANCE OF
SHOWERS.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
7 TO 8 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-181200-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
704 PM EDT SAT OCT 17 2026
...GALE WATCH IN EFFECT FROM MONDAY EVENING THROUGH WEDNESDAY
MORNING...
TONIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
8 FT. WAVE DETAIL: N 7 FT AT 7 SECONDS AND NE 7 FT AT 8 SECONDS.
SUN
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT. WAVE DETAIL: N 7 FT AT 7 SECONDS AND NE 4 FT AT 10 SECONDS.
SUN NIGHT
E WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 5 TO 7 FT. WAVE DETAIL: NE 6 FT
AT 7 SECONDS AND E 6 FT AT 9 SECONDS.
MON
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
9 FT, BUILDING TO 8 TO 11 FT IN THE AFTERNOON. WAVE DETAIL: E
8 FT AT 8 SECONDS, BECOMING E 11 FT AT 11 SECONDS AND SE 6 FT AT
12 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
MON NIGHT AND TUE
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 9 TO 13 FT. WAVE DETAIL: E 13 FT AT 11 SECONDS AND N 7 FT AT
5 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS
10 TO 13 FT. WAVE DETAIL: NE 13 FT AT 10 SECONDS AND N 7 FT AT
6 SECONDS.
WED
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 10 TO
13 FT.
WED NIGHT AND THU
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 10 TO 14 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
8 TO 11 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-181200-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
704 PM EDT SAT OCT 17 2026
...GALE WATCH IN EFFECT FROM MONDAY EVENING THROUGH WEDNESDAY
MORNING...
TONIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
8 FT. WAVE DETAIL: N 8 FT AT 7 SECONDS AND S 2 FT AT 8 SECONDS.
SUN
NE WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. SEAS 5 TO 8 FT. WAVE DETAIL: N 7 FT
AT 7 SECONDS AND NE 4 FT AT 10 SECONDS.
SUN NIGHT
NE WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 5 TO 7 FT, BUILDING TO
6 TO 9 FT AFTER MIDNIGHT. WAVE DETAIL: E 7 FT AT 12 SECONDS AND N
6 FT AT 7 SECONDS, BECOMING E 8 FT AT 8 SECONDS AND N 1 FOOT AT
5 SECONDS.
MON
NE WINDS 20 TO 25 KT, INCREASING TO 25 TO 30 KT IN THE
AFTERNOON. SEAS 7 TO 10 FT, BUILDING TO 9 TO 13 FT IN THE
AFTERNOON. WAVE DETAIL: E 10 FT AT 10 SECONDS AND E 5 FT AT
6 SECONDS, BECOMING E 13 FT AT 11 SECONDS AND NE 6 FT AT
7 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
MON NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
10 TO 14 FT. WAVE DETAIL: E 13 FT AT 11 SECONDS AND N 8 FT AT
7 SECONDS. SHOWERS LIKELY.
TUE AND TUE NIGHT
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 40 KT.
SEAS 11 TO 13 FT. WAVE DETAIL: NE 13 FT AT 9 SECONDS AND N 5 FT
AT 6 SECONDS. A CHANCE OF SHOWERS.
WED
NE WINDS AROUND 35 KT WITH GUSTS UP TO 40 KT. SEAS 12 TO
14 FT. A CHANCE OF SHOWERS.
WED NIGHT AND THU
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 40 KT.
SEAS 13 TO 15 FT, SUBSIDING TO 11 TO 14 FT. SHOWERS LIKELY.
THU NIGHT
N WINDS AROUND 30 KT WITH GUSTS UP TO 40 KT. SEAS
9 TO 12 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ283-181200-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
704 PM EDT SAT OCT 17 2026
...GALE WATCH IN EFFECT FROM MONDAY EVENING THROUGH WEDNESDAY
MORNING...
TONIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT. WAVE DETAIL: N 7 FT AT 7 SECONDS AND S 2 FT AT 8 SECONDS.
SUN
NE WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. SEAS 5 TO 7 FT. WAVE DETAIL: NE
7 FT AT 7 SECONDS AND SE 1 FOOT AT 8 SECONDS.
SUN NIGHT
NE WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 4 TO 6 FT, BUILDING TO
5 TO 8 FT AFTER MIDNIGHT. WAVE DETAIL: NE 6 FT AT 7 SECONDS AND E
6 FT AT 9 SECONDS, BECOMING E 8 FT AT 9 SECONDS AND NE 5 FT AT
5 SECONDS.
MON
NE WINDS 20 TO 25 KT, INCREASING TO 25 TO 30 KT IN THE
AFTERNOON. SEAS 7 TO 10 FT, BUILDING TO 9 TO 13 FT IN THE
AFTERNOON. WAVE DETAIL: E 10 FT AT 10 SECONDS AND NE 7 FT AT
6 SECONDS, BECOMING E 13 FT AT 12 SECONDS AND E 7 FT AT
8 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
MON NIGHT AND TUE
NE WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT.
SEAS 10 TO 14 FT. WAVE DETAIL: E 14 FT AT 12 SECONDS AND N 9 FT
AT 7 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 45 KT. SEAS
10 TO 13 FT. WAVE DETAIL: NE 13 FT AT 10 SECONDS AND N 8 FT AT
7 SECONDS.
WED THROUGH THU
NE WINDS 30 TO 40 KT WITH GUSTS UP TO 45 KT.
SEAS 11 TO 14 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 30 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS
8 TO 11 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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